Fatal error: Uncaught Error: Call to undefined function register_block_type() in /wp-content/plugins/html5-audio-player/inc/gutenblock/index.php:10 Stack trace: #0 /wp-content/plugins/html5-audio-player/inc/gutenblock/index.php(40): h5ap_ter_block_type('kahf-banner-k27...', Array) #1 /wp-includes/class-wp-hook.php(286): h5ap_blocks_script('') #2 /wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #3 /wp-includes/plugin.php(453): WP_Hook->do_action(Array) #4 /wp-settings.php(450): do_action('init') #5 /wp-config.php(89): require_once('/wp-settings.ph...') #6 /wp-load.php(37): require_once('/wp-config.php') #7 /wp-login.php(12): require('/wp-load.php') #8 {main} thrown in /wp-content/plugins/html5-audio-player/inc/gutenblock/index.php on line 10